Silicon, silicium, Si, is number 14 in the Periodic Table. The element with the symbol Si is silicon with the atomic number 14. The element with the atomic number 16 is sulfur with the symbol S. Atomic mass: The mass of an atom is primarily determined by the number of protons and neutrons in its nucleus. Atomic mass is measured in Atomic Mass Units (amu) which are scaled relative to carbon, 12 C, that is taken as a standard element with an atomic mass of 12.

This is a list of the 118 chemical elements which have been identified as of 2021. A chemical element, often simply called an element, is a species of atoms which all have the same number of protons in their atomic nuclei (i.e., the same atomic number, or Z). The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present). The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that. A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight 28.084; 28.086.

What is the isotope notation for carbon-14?

1 Answer

Explanation:

Isotope notation is of the form

#'_Z^A X#

where #Z# is the atomic number (number of protons), #A# is the mass number (sum of protons and neutrons), and #X# is the element.

In Carbon-#14#, #14# is the mass number (sum of protons and neutrons). This is our #A#.

Lithium

Carbon has the atomic symbol #C#, and it has #6# protons. This is the atomic number, or #A#. Thus, the isotope notation for Carbon-#14# is

Atomic Number 149

#'_6^14 C#

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